| RRotochopper | Saint Martin | MN | Fabricated Metal Product Manufacturing332999 | 100-499 | ◐ LIKELY ACTIVE |
| SVSanden Vendo America Inc | Dallas | TX | Machinery Manufacturing333311 | 100-499 | ◐ LIKELY ACTIVE |
Seachange Printing & Marketing Services LLC | Plymouth | MN | Printing and Related Support Activities323110 | 100-499 | ◐ LIKELY ACTIVE |
| SISerac INC | Carol Stream | IL | Machinery Manufacturing333993 | 100-499 | ◐ LIKELY ACTIVE |
| SPSerpa Packaging Solutions | Visalia | CA | Machinery Manufacturing333993 | 100-499 | ◐ LIKELY ACTIVE |
| SPServer Products Inc | Richfield | WI | Machinery Manufacturing333310 | 100-499 | ◐ LIKELY ACTIVE |
| SServtech | Louisville | CO | Machinery Manufacturing333132 | 100-499 | ◐ LIKELY ACTIVE |
| SSew-eurodrive | Desoto | TX | Machinery Manufacturing333612 | 100-499 | ◐ LIKELY ACTIVE |
| SESEW Eurodrive Lyman Assembly | Wellford | SC | Machinery Manufacturing333612 | 100-499 | ◐ LIKELY ACTIVE |
| SAShield Air Solutions, INC. | Houston | TX | Machinery Manufacturing333415 | 100-499 | ◐ LIKELY ACTIVE |
| SESiemens Energy | Houston | TX | Machinery Manufacturing333611 | 100-499 | ◐ LIKELY ACTIVE |
| SESiemens Energy Incorporated | Fort Payne | AL | Machinery Manufacturing333611 | 100-499 | ◐ LIKELY ACTIVE |
Snorkel International INC | Elwood | KS | Machinery Manufacturing333120 | 100-499 | ◐ LIKELY ACTIVE |
| SMSolberg Manufacturing INC. | Itasca | IL | Machinery Manufacturing333413 | 100-499 | ◐ LIKELY ACTIVE |
| SRSpringfield Remanufacturing CORP | Springfield | MO | Machinery Manufacturing333618 | 100-499 | ◐ LIKELY ACTIVE |
| SBStanley Black & Decker INC | Jackson | TN | Fabricated Metal Product Manufacturing332721 | 100-499 | ◐ LIKELY ACTIVE |
| SSStewart Systems Baking | Plano | TX | Machinery Manufacturing333241 | 100-499 | ◐ LIKELY ACTIVE |
| SMStolle Machinery - Centennial | Centennial | CO | Machinery Manufacturing333513 | 100-499 | ◐ LIKELY ACTIVE |
| SMSuburban Mfg | Dayton | TN | Plastics and Rubber Products Manufacturing326199 | 100-499 | ◐ LIKELY ACTIVE |
| SASun Automation | Glen Arm | MD | Machinery Manufacturing333243 | 100-499 | ◐ LIKELY ACTIVE |
Super Radiator Coils - Mesa I | Mesa | AZ | Fabricated Metal Product Manufacturing332410 | 100-499 | ◐ LIKELY ACTIVE |
| SSSuper Steel LLC | Mequon | WI | Plastics and Rubber Products Manufacturing326191 | 100-499 | ◐ LIKELY ACTIVE |
| SMSyntron Material Handling | Saltillo | MS | Machinery Manufacturing333131 | 100-499 | ◐ LIKELY ACTIVE |
| TCThomas Conveyor | Burleson | TX | Machinery Manufacturing333922 | 100-499 | ◐ LIKELY ACTIVE |
| TTTipper Tie - JBT | Apex | NC | Machinery Manufacturing333241 | 100-499 | ◐ LIKELY ACTIVE |
| TCTpi Composites Iowa LLC | Newton | IA | Machinery Manufacturing333611 | 100-499 | ◐ LIKELY ACTIVE |
| TTTrend Technologies | Elk Grove Village | IL | Fabricated Metal Product Manufacturing332112 | 100-499 | ◐ LIKELY ACTIVE |
| TATrion - ASC | Sanford | NC | Fabricated Metal Product Manufacturing332312 | 100-499 | ◐ LIKELY ACTIVE |
| TCTwin City Fan Companies: Plymouth | Minneapolis | MN | Machinery Manufacturing333413 | 100-499 | ◐ LIKELY ACTIVE |
| UMUchiyama MFG America LLC | Goldsboro | NC | Machinery Manufacturing333612 | 100-499 | ◐ LIKELY ACTIVE |
| UMUnex Manufacturing, INC. | Lakewood | NJ | Machinery Manufacturing333922 | 100-499 | ◐ LIKELY ACTIVE |
| UBUnified Brands | Weidman | MI | Machinery Manufacturing333415 | 100-499 | ◐ LIKELY ACTIVE |
| UTUniversal Tool Equipment & Controls | Sterling Heights | MI | Fabricated Metal Product Manufacturing332710 | 100-499 | ◐ LIKELY ACTIVE |
| VMVentura Manufacturing | Zeeland | MI | Machinery Manufacturing333518 | 100-499 | ◐ LIKELY ACTIVE |
| VDVermeer Des Moines | Des Moines | IA | Machinery Manufacturing333120 | 100-499 | ◐ LIKELY ACTIVE |
Votaw Precision Technologies INC | Santa Fe Springs | CA | Machinery Manufacturing333514 | 100-499 | ◐ LIKELY ACTIVE |
| WNWacker Neuson America CORP | Menomonee Falls | WI | Fabricated Metal Product Manufacturing332999 | 100-499 | ◐ LIKELY ACTIVE |
| WUWalinga USA INC | Wayland | MI | Machinery Manufacturing333111 | 100-499 | ◐ LIKELY ACTIVE |
| WMWarrior Mfg., Llc-hutchinson, Mn | Hutchinson | MN | Fabricated Metal Product Manufacturing332312 | 100-499 | ◐ LIKELY ACTIVE |
| WWatertronics | Hartland | WI | Fabricated Metal Product Manufacturing332117 | 100-499 | ◐ LIKELY ACTIVE |
| WWeil-McLain | Eden | NC | Machinery Manufacturing333414 | 100-499 | ◐ LIKELY ACTIVE |
| WMWenger Manufacturing, Inc. - 714 Main St. | Sabetha | KS | Machinery Manufacturing333241 | 100-499 | ◐ LIKELY ACTIVE |
| WTWestfalia Technologies, Incorporated | York | PA | Machinery Manufacturing333922 | 100-499 | ◐ LIKELY ACTIVE |
| WFWilliams Furnace CO | Colton | CA | Machinery Manufacturing333414 | 100-499 | ◐ LIKELY ACTIVE |
| WMWilson Manufacturing Company | Saint Louis | MO | Fabricated Metal Product Manufacturing332813 | 100-499 | ◐ LIKELY ACTIVE |
| WTWilson Trailer Yankton | Yankton | SD | Machinery Manufacturing333111 | 100-499 | ◐ LIKELY ACTIVE |
| WPWinder Price Industries | Winder | GA | Fabricated Metal Product Manufacturing332322 | 100-499 | ◐ LIKELY ACTIVE |
| WLWinpak Lane INC | Rialto | CA | Machinery Manufacturing333993 | 100-499 | ◐ LIKELY ACTIVE |
| ZRZehnder Rittling | Buffalo | NY | Machinery Manufacturing333414 | 100-499 | ◐ LIKELY ACTIVE |
| ZZZero Zone Refrigeration LLC | Ramsey | MN | Primary Metal Manufacturing331312 | 100-499 | ◐ LIKELY ACTIVE |